Acceleration of gravity measured

1. The problem statement, all variables and given/known data
A simple pendulum is used to measure the acceleration of gravity using T= 2pi sqrt(l/g). The period was measured to be 1.24 +-0.02s and the length, l, to be 0.381 +-0.002m. What is the resulting value for g with it's absolute and relative uncertainty?

2. Relevant equations
T= 2pi sqrt(l/g)

3. The attempt at a solution
1.24= 2pi sqrt(.381/g)--------g=.381m/3.794m/s^2

1. The problem statement, all variables and given/known data
A simple pendulum is used to measure the acceleration of gravity using T= 2pi sqrt(l/g). The period was measured to be 1.24 +-0.02s and the length, l, to be 0.381 +-0.002m. What is the resulting value for g with it's absolute and relative uncertainty?

2. Relevant equations
T= 2pi sqrt(l/g)

3. The attempt at a solution
1.24= 2pi sqrt(.381/g)--------g=.381m/3.794m/s^2

You seem to have made an error in that calculation. Please post all your steps.
With regard to the error calculation, you need to show an attempt at that too.
There are two different ways of determining resultant error, and which is correct depends on what the answer will be used for. An engineer mostly takes 'worst case', i.e. the extreme possibilities of the result given the ranges of the input errors. In other environments, a more statistical approach is used, and the formula involves root-sum-square. Which have you been taught?